Power ON: Press for 3 seconds the blue light will flash once the device will connect last cellphone automatically. (The device cannot be searched it just connect the last cellphone.); Pairing: Press the button for 5 seconds alternately flashes red and blue light device enter Pairing mode the name is: SKYUNION; Power OFF: The device will power off automatically if no pairing more than 3 minutes. If you want to shut down when it's working please press the button for 5 seconds the red light will flash 3 times it will shut down; Note: After pairing if press button cannot take photos please set you volume raise button